1. Online Auto Repair Resources:
* AutoZone.com: AutoZone offers a free online repair manual called "Repair Guides." While they may not have a full engine diagram, they might have exploded views of specific components or systems.
* AllDataDIY.com: While not completely free, AllDataDIY offers a free trial period. This will give you access to a vast database of repair information, including diagrams, for your specific car.
* Mitchell 1: Similar to AllDataDIY, Mitchell 1 offers a free trial period for access to their extensive repair information database.
2. Forum and Community Websites:
* Mercedes-Benz Forums: Search for forums dedicated to Mercedes-Benz, specifically the C-Class. Enthusiasts often share diagrams and repair tips within their discussions.
* Reddit's r/MechanicAdvice: Post your request for an engine diagram on this subreddit. It's a great place to ask for help from experienced mechanics and car enthusiasts.
3. YouTube:
* Search for "2003 Mercedes C230 engine diagram" or "2003 Mercedes C230 engine rebuild" on YouTube. Many mechanics post videos that feature detailed engine diagrams or walk-throughs of engine repair procedures.
Important Notes:
* Accuracy: Always cross-reference information from multiple sources to ensure accuracy.
* Specificity: Look for diagrams that specifically match your engine code. The engine code should be found on the engine itself, your vehicle registration, or your owner's manual.
Finding a diagram online may not be a substitute for a proper factory service manual. If you're planning on serious repairs, it's always best to invest in a reliable manual to ensure you have the most accurate and comprehensive information.
